Problem is that the error occurs in scripts which worked properly before, so I dont think there is error in any script. Anyway I'm posting my testing code:
<?
error_reporting(E_ALL);
copy("13-1.jpg","tt2.jpg");
?>
I have also tried your code but with same result:
"failed to copy 14-2.jpg..."
I must also note that the write permisions are properly said and the disc quota is not over.